【図面の簡単な説明】[Brief explanation of drawings] 第１図は本考案の開口器の斜視図、第２図は本
考案の保持孔つき頬舌圧排器の斜視図、第３図は
開口器を頬舌圧排器に取り付けた所を示した斜視
図である。 １……主部、２……差し込み部、３……咬合面
部、４……糸穴、５……頬舌圧排器、６……保持
孔。 Fig. 1 is a perspective view of the opening device of the present invention, Fig. 2 is a perspective view of the buccolingual excluder with a holding hole of the present invention, and Fig. 3 is a perspective view showing the place where the opening device is attached to the buccolingual excluder. It is a diagram. 1... Main part, 2... Insertion part, 3... Occlusal surface part, 4... Thread hole, 5... Buccolingual excluder, 6... Holding hole.